Discount Auto Parts and Accessories Auto Parts Since 2008
Call To Order: 1-800-541-9352

Get the Best Priced Mercedes 300SDL Thermostat

Select Your Vehicle:
Mercedes 300SDL Thermostat Reviews
Loading Reviews...
  • Buy With Confidence
    Delivering reliable auto parts service since 2008
  • 30 Day Returns
    Ordered the wrong part? Enjoy peace of mind with easy returns
  • Call To Order
    Need help ordering? Call us toll free at 1-800-541-9352 to order
  • Fast Delivery
    Get the parts and accessories you need when you need them
  • Huge Selection
    Huge selection of OEM, stock replacement or aftermarket accessories
  • Competitive Prices
    We have the all the parts you need at the most competitive prices

Shop Mercedes 300SDL Replacement Thermostat

The thermostat on your Mercedes 300SDL, unlike your home's wall thermostat, doesn't signal the heater or AC when to turn on and off but, rather, signals your car's engine coolant when to leave the engine and go into the radiator to be cooled off. When the engine is cool, typically below 180 degrees F., the thermostat remains closed and the coolant simply circulates within the engine. Once the engine reaches operating temperature, however, the thermostat opens up to allow the coolant to flow through the hose and into the radiator, where it's allowed to be cooled down.

A faulty thermostat means the engine will either overheat or under-heat, depending on whether it's stuck in the open or closed position. Either way, it needs to be replaced, and PartsGeek.com has the exact replacement part for your 1986 or 1987 Mercedes 300SDL, from either Beck/Arnley or Stant.

We stock these Thermostat brands for the Mercedes 300SDL: WahlerBeck ArnleyMahleBehrHellaGatesStantMotorad

Thermostats available for the following Mercedes 300SDL years: 1987, 1986, 87, 86. This part is also sometimes called Mercedes 300SDL Thermostats. We stock thermostat parts for most Mercedes models including C230, C300, E350, ML350, E320, C280, GL450, GLK350, R350, 300D, ML320, 190E, S550, C250, CLS550, S500, CLK350, 300E, S600, 450SL, C350, 380SL, 300SD, E300, SL500, 300TD, ML430, E420, ML500, 560SL, C240, 240D, E550, S320, SLK230, 420SEL, S420, CLK320, SLK350 and S430.

Select your 300SDL year

Review Fitment Notes
Showing 17 of 30 Results
Wahler Thermostat - for 1987 Mercedes 300SDL - W0133-1629320 Click to Enlarge
5 Stars
Wahler W0133-1629320
Thermostat
Loading Reviews...
Part Number: W0133-1629320
Brand: Wahler
Condition: New
Shipping Options: Ground, Overnight, 2 Day
OEM
List Price:
$46.00
Our Price: $20.58
(10) In Stock
This Part Fits:
Catalog: A
Vehicle
1987 Mercedes 300SDL
Wahler Thermostat - for 1986 Mercedes 300SDL - W0133-1629320 Click to Enlarge
5 Stars
Wahler W0133-1629320
Thermostat
Loading Reviews...
Part Number: W0133-1629320
Brand: Wahler
Condition: New
Shipping Options: Ground, Overnight, 2 Day
OEM
List Price:
$46.00
Our Price: $20.58
(10) In Stock
This Part Fits:
Catalog: A
Vehicle
1986 Mercedes 300SDL
Beck Arnley Thermostat - for 1987 Mercedes 300SDL 3.0L 6 Cyl - 143-0823 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 143-0823
Brand: Beck Arnley
Notes: Engine Coolant Thermostat -- ORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
  • Matches OE form, fit and function
  • Features a long stroke for maximum cooling
  • Constructed with premium materials for durability
  • Be sure to use the proper coolant to maximize cooling system life. See Beck/Arnley catalog for the coolant for this application.
  • Application specific for this vehicle
Condition: New
TEMPERATURE: 176
Shipping Options: Ground
$20.18
(9) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1987 Mercedes 300SDL 3.0L 6 Cyl
Mahle Thermostat - for 1987 Mercedes 300SDL - W0133-1629320 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: W0133-1629320
Brand: Mahle
Condition: New
Shipping Options: Ground, Overnight, 2 Day
OEM
List Price:
$46.00
Our Price: $14.58
(19) In Stock
This Part Fits:
Catalog: A
Vehicle
1987 Mercedes 300SDL
Behr Thermostat - for 1987 Mercedes 300SDL - W0133-1629320 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: W0133-1629320
Brand: Behr
Detailed Notes: Includes O-Ring - 80 Degree
Condition: New
Shipping Options: Ground, Overnight, 2 Day
OEM
List Price:
$45.00
Our Price: $19.58
View Details
This Part Fits:
Catalog: A
Vehicle
1987 Mercedes 300SDL
Hella Coolant Thermostat Kit - for 1987 Mercedes 300SDL - TX 20 80D Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: TX 20 80D
Brand: Hella
Notes: Behr Thermot-Tronik OEM -- OE Quality; 80c with Gasket
Condition: New
Shipping Options: Ground
$15.18
(16) In Stock
This Part Fits:
Catalog: B
Vehicle
1987 Mercedes 300SDL
Gates Thermostat - for 1987 Mercedes 300SDL 3.0L 6 Cyl DIESEL - 34028 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 34028
Brand: Gates
Notes: OE Type Thermostat -- 176 Degree; OE Temperature; Seal included
Condition: New
Design: Bottom By-Pass
Shipping Options: Ground
$29.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
1987 Mercedes 300SDL 3.0L 6 Cyl DIESEL
Stant Thermostat - for 1987 Mercedes 300SDL - 13588 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 13588
Brand: Stant
Notes: OE Type Thermostat -- Temperature 176 Degrees; OE Temperature
Condition: New
Temperature (F): 176 Degrees
Shipping Options: Ground
$12.18
(51) In Stock
This Part Fits:
Catalog: B
Vehicle
1987 Mercedes 300SDL
Beck Arnley Thermostat - for 1986 Mercedes 300SDL 3.0L 6 Cyl - 143-0823 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 143-0823
Brand: Beck Arnley
Notes: Engine Coolant Thermostat -- ORIGINAL EQUIPMENT TEMPERATURE; Includes Gasket; Includes Gasket/Seal; TEMPERATURE 176
  • Matches OE form, fit and function
  • Features a long stroke for maximum cooling
  • Constructed with premium materials for durability
  • Be sure to use the proper coolant to maximize cooling system life. See Beck/Arnley catalog for the coolant for this application.
  • Application specific for this vehicle
Condition: New
TEMPERATURE: 176
Shipping Options: Ground
$20.18
(9) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1986 Mercedes 300SDL 3.0L 6 Cyl
Gates Thermostat - for 1986 Mercedes 300SDL 3.0L 6 Cyl DIESEL - 34028 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 34028
Brand: Gates
Notes: OE Type Thermostat -- 176 Degree; OE Temperature; Seal included
Condition: New
Design: Bottom By-Pass
Shipping Options: Ground
$29.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
1986 Mercedes 300SDL 3.0L 6 Cyl DIESEL
Stant Thermostat - for 1987 Mercedes 300SDL - 48658 Click to Enlarge
5 Stars
Stant 48658
Thermostat
Loading Reviews...
Part Number: 48658
Brand: Stant
Notes: OE Type Thermostat -- Temperature 185 Degrees; Seal Included - Seal; OE Temperature
Condition: New
Temperature (F): 185 Degrees
Shipping Options: Ground
$15.18
View Details
This Part Fits:
Catalog: B
Vehicle
1987 Mercedes 300SDL
Stant Thermostat - for 1986 Mercedes 300SDL - 48658 Click to Enlarge
5 Stars
Stant 48658
Thermostat
Loading Reviews...
Part Number: 48658
Brand: Stant
Notes: OE Type Thermostat -- Temperature 185 Degrees; Seal Included - Seal; OE Temperature
Condition: New
Temperature (F): 185 Degrees
Shipping Options: Ground
$15.18
View Details
This Part Fits:
Catalog: B
Vehicle
1986 Mercedes 300SDL
Motorad Thermostat - for 1987 Mercedes 300SDL 3.0L 6 Cyl - 251-185 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 251-185
Brand: Motorad
Notes: Standard -- Temperature 185F; OE Specified Temperature
  • Meets or exceeds OEM standards
  • 100% tested and calibrated
  • High grade stainless steel and copper construction
  • Original equipment design for worry-free direct fit replacement
  • Consistent and precise response to cooling system needs
Condition: New
Prop 65: WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
Temperature (Degree): 185
Shipping Options: Ground
$18.18
(1) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
1987 Mercedes 300SDL 3.0L 6 Cyl
Stant Thermostat - for 1986 Mercedes 300SDL - 13588 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 13588
Brand: Stant
Notes: OE Type Thermostat -- Temperature 176 Degrees; OE Temperature
Condition: New
Temperature (F): 176 Degrees
Shipping Options: Ground
$12.18
(51) In Stock
This Part Fits:
Catalog: B
Vehicle
1986 Mercedes 300SDL
Gates Thermostat - for 1987 Mercedes 300SDL 3.0L 6 Cyl DIESEL - 33518 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 33518
Brand: Gates
Notes: OE Type Thermostat -- 176 Degree; OE Temperature
Condition: New
Design: Bottom By-Pass
Shipping Options: Ground
$26.83
(2) In Stock
This Part Fits:
Catalog: H
Vehicle Engine
1987 Mercedes 300SDL 3.0L 6 Cyl DIESEL
Mahle Thermostat - for 1987 Mercedes 300SDL - 602 200 00 15 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 602 200 00 15
Brand: Mahle
Notes: Thermostat (80 deg. C)
Condition: New
Shipping Options: Ground
$16.73
(12) In Stock
This Part Fits:
Catalog: G
Vehicle
1987 Mercedes 300SDL
Motorad Thermostat - for 1986 Mercedes 300SDL 3.0L 6 Cyl - 247-180 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 247-180
Brand: Motorad
Notes: Standard -- Temperature 180F; OE Specified Temperature
  • Consistent and precise response to cooling system needs
  • High grade stainless steel and copper construction
  • Original equipment design for worry-free direct fit replacement
  • Meets or exceeds OEM standards
  • 100% tested and calibrated
Condition: New
Prop 65: WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
Temperature (Degree): 180
Shipping Options: Ground
$11.73
(8) In Stock
This Part Fits:
Catalog: T
Vehicle Engine
1986 Mercedes 300SDL 3.0L 6 Cyl

Related Cooling System Parts

Some of our Customer Reviews
Verified Customer
1/12/10 12:36 PM - USA

Great company, terrific website, good prices, fast shipping. box was a bit crushed in the shipping bag. doubt theres any part damage but havnt installed it yet. thanks - r.jasinski

Verified Customer
9/9/10 11:15 PM - USA

Fast Shipping, Right Part at the right price. - timrobocop